Information monitoring and updating method and system for transport stream

Abstract

An information monitoring and updating method and system for a transport stream is provided. First, a transport stream is received. The transport stream includes a program specific information (PSI) table, and the PSI table is divided into a plurality of sections. Next, by setting a first filtering parameter of a monitor-section filter, the header of each section of the PSI table is filtered out and is then checked whether to be a latest version or not. When all the section headers of the PSI table are of the latest version, each section of the PSI table is filtered by setting a second filtering parameter of a table-section filter.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 96103374, filed on Jan. 30, 2007. All disclosure of the Taiwan application is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a transport stream, more particularly to an information monitoring and updating method and system for a transport stream.[0004]2. Description of Related Art[0005]The development of digital TV industry brings along tremendous demands to multimedia home platform (MHP). Accordingly, various digital TV standard organizations have established their own middleware standards so that digital TV receivers conforming to these standards can perform diverse multimedia interactions, information applications, and services, such as electric program guide, real-time stock information, and TV shopping etc.[0006]However, different countries or regions have different middleware...

AI Technical Summary

Benefits of technology

[0021]Accordingly, the present invention is directed to an information monitoring method and system for a transport stream, wherein information monitoring can be carried out by only filtering the header of a section in a PSI table. Accordingly, information monitoring can be completed quickly, memory space used for information monitoring calculation can be reduced, and the system performance of a receiver platform for carrying out information monitoring can be improved.

[0022]Examples of the present invention may provide an information updating method of a transport stream. According to this method, the header of a section in a PSI table is filtered out by using a monitor-section filter, and when the headers of all the sections in the PSI table are determined to be the latest version, a user is notified that a PSI table of newer version is available so that the user can determine whether to update the information. When the user decides to update the information, the sections of the newer version PSI table are filtered by a table-section filter and then the sections of the newer version PSI table are parsed, and stored, so that the information can be updated quickly, the system performance of the receiver platform can be improved, and the resources of the section filters can be used appropriately.

[0025]In the present invention, the header of a section of the PSI table is filtered out by using a monitor-section filter, and information monitoring to the transport stream is carried out with this header, so that the memory space used for information monitoring calculation is reduced. Moreover, a new information monitoring and updating method is provided according to the information updating mechanism specified by DVB. According to this method, information monitoring and updating of a transport stream can be carried out quickly, the system performance of a receiver platform can be improved, and the resources of section filters can be utilized effectively.

Problems solved by technology

However, different countries or regions have different middleware standards for interactive digital TV, and which brings difficulties in program conversion between different middleware standards.

However, the GEM standard is not a complete, independent standard; instead, it is a referenced framework for standards established based on MHP.

Thus, as illustrated in FIG. 2, since the sections of the particular table are filtered out by the table-section filter and information monitoring is then carried out with the version numbers of these sections, information monitoring cannot be carried out effectively and memory space is also wasted.

In addition, while performing information monitoring, the sections filtered by the table-section filter are discarded after they are used for determining whether the versions of the sections are of the latest version, and when the user decides to update the information, these sections of the particular table have to be re-filtered, which causes unnecessary section waste.

However, this technique is only applicable to the DSM-CC portion of a transport stream but cannot provide other services, for example, service information (SI), of the latest version.

However, this technique has a special specification and is not applicable to broadcasting telecommunication network, and besides, headend equipments compatible to the mechanism of this technique have to be used.

However, in the technique described above, the user cannot choose a method for obtaining the section, and the user is not notified of resource changes and the state of sections.

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